One of the best ways to become more accurate in your astrological predictions, is to pour through past personal charts (solar returns, progressions, transits) of yourself and people you’re close to as well as read the biographical events of celebrities that interest you.
When reading biographies select material that often highlights dates and locations. And for yourself and personal relationships, seek out diaries, journals, documents, and other recordings of events. This would be a good time to reinforce that keeping a diary, as an astrologer, is quite important to your own personal development as well updating and challenging your general astrological understanding.
We can see how the symbiosis between the cosmos and yourself manifested the very personal and specific events that happened.
Astrologers base much of their interpretative work on observation over time (if not their own, others); however, the specific details may be off because while the chances of one thing happening are ‘high’, the native always has an element of freewill where they can direct the themes and rulerships of the planets in a different direction while retaining the essence of the lesson, opportunity, gift, test, or challenge.
As well, mundane celestial events alter the general character, culture, and well-being of the masses and that also has a direct effect on the outcome of personal predictions. So in-depth astrologers are looking a large number of charts to determine an outcome. One chart, just like one aspect, will not tell you the whole story when it comes to predictions.
Predictive fear (Saturn-Neptune) can be removed and replaced with manifestation plans (Saturn-Jupiter).